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Pollution (Road Vehicles)

Volume 895: debated on Monday 7 July 1975

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asked the Secretary of State for the Environment whether he will now publish specific standards for the upper limit of smoke emission from public service vehicles and goods vehicles.

Since October 1972 all new diesel-engined vehicles have been required to be fitted with engines type 4 approved to BS AU141a: 1971, which sets specific standards for the emission of diesel smoke. In practice, however, engines do not always meet these standards and I am considering what new measures are required to improve production conformity.